ckbunker.com valid

CKBunker

CKBunker is open-source software for COLDCARD HSM mode: remote PSBT/message signing over Tor under a COLDCARD-enforced HSM policy.

For agents: Open-source software for remote PSBT and message signing with COLDCARD HSM policy over Tor. Docs cover setup, HSM policy, signing workflows and security model.

coldcard hsmpsbt signingbitcointoropen source signing

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-23T14:14:24.703Z. Cached copy · Source on ckbunker.com

# CKBunker

> CKBunker is open-source software for COLDCARD HSM mode: remote PSBT/message signing over Tor under a COLDCARD-enforced HSM policy.

## Key Facts
- Product: CKBunker / CK Bunker / Coinkite Bunker
- Publisher ecosystem: Coinkite / COLDCARD
- Source code: https://github.com/Coldcard/ckbunker
- Website: https://ckbunker.com/
- Category: Bitcoin hardware-wallet HSM helper
- Core workflow: remote PSBT signing, Tor hidden service, HSM users, local confirmation, destination/amount/velocity policy controls
- Security boundary: the COLDCARD and its approved HSM policy, not the attached host
- Current caveat: COLDCARD Q does not provide HSM mode per current COLDCARD HSM docs

## Docs
- [CKBunker homepage](https://ckbunker.com/): Product overview and core architecture.
- [Documentation](https://ckbunker.com/docs/): Start page for setup and operation docs.
- [Install](https://ckbunker.com/docs/install.html): Source install, Python/Tor requirements, and local-first run path.
- [Setup](https://ckbunker.com/docs/setup.html): COLDCARD setup, Bunker setup, encrypted settings, and host-compromise assumptions.
- [HSM Policy](https://ckbunker.com/docs/policy.html): Spending rules, velocity limits, whitelists, users, local confirmation, logging, and boot-to-HSM.
- [PSBT Signing](https://ckbunker.com/docs/psbt.html): Daily PSBT signing and approval workflow.
- [Message Signing](https://ckbunker.com/docs/message-signing.html): Text message signing under explicit derivation-path restrictions.
- [Security Model](https://ckbunker.com/docs/security.html): Trust boundary, host compromise, local confirmation, and deployment advice.
- [Use Cases](https://ckbunker.com/docs/use-cases.html): Small payments, geographically separated multisig, warm-wallet freeze, executive approvals, and Storage Locker.
- [Contributing](https://ckbunker.com/docs/contributing.html): Source and documentation contribution pointers.
- [FAQ](https://ckbunker.com/docs/faq.html): Common questions about CKBunker, HSM mode, Tor, Q support, and source code.

## Related Authoritative Sources
- [COLDCARD HSM Mode and CKBunker](https://coldcard.com/docs/hsm/): Current COLDCARD HSM documentation.
- [COLDCARD HSM Security Notes](https://coldcard.com/docs/hsm/security/): Security notes for HSM mode and CKBunker.
- [Source repository](https://github.com/Coldcard/ckbunker): Open-source implementation.

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Machine-readable: GET /v1/resolve?q=ckbunker.com · GET /v1/domain/ckbunker.com · this page as Accept: application/json or text/markdown · MCP lookup_domain

Automatically discovered from public files. Inclusion does not imply endorsement or publisher participation.

Claim my listing on Agent Web Map for ckbunker.com:
1. POST https://agentwebmap.com/v1/sites/ckbunker.com/claims and keep claim_id and claim_secret private.
2. Publish the proof: add the line "AgentWebMap ownership: <token>" (token from step 1) to https://ckbunker.com/llms.txt, or use the DNS, meta-tag or well-known method the response describes.
3. POST https://agentwebmap.com/v1/sites/ckbunker.com/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/ckbunker.com).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

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